yardstick/benchmark/contexts/heat.py

   1 ##############################################################################
   2 # Copyright (c) 2015 Ericsson AB and others.
   3 #
   4 # All rights reserved. This program and the accompanying materials
   5 # are made available under the terms of the Apache License, Version 2.0
   6 # which accompanies this distribution, and is available at
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8 ##############################################################################
   9
  10 from __future__ import absolute_import
  11 from __future__ import print_function
  12
  13 import collections
  14 import logging
  15 import os
  16 import sys
  17 import uuid
  18
  19 import paramiko
  20 import pkg_resources
  21
  22 from yardstick.benchmark.contexts.base import Context
  23 from yardstick.benchmark.contexts.model import Network
  24 from yardstick.benchmark.contexts.model import PlacementGroup, ServerGroup
  25 from yardstick.benchmark.contexts.model import Server
  26 from yardstick.benchmark.contexts.model import update_scheduler_hints
  27 from yardstick.orchestrator.heat import HeatTemplate, get_short_key_uuid
  28 from yardstick.definitions import YARDSTICK_ROOT_PATH
  29
  30 LOG = logging.getLogger(__name__)
  31
  32
  33 class HeatContext(Context):
  34     """Class that represents a context in the logical model"""
  35
  36     __context_type__ = "Heat"
  37
  38     def __init__(self):
  39         self.name = None
  40         self.stack = None
  41         self.networks = []
  42         self.servers = []
  43         self.placement_groups = []
  44         self.server_groups = []
  45         self.keypair_name = None
  46         self.secgroup_name = None
  47         self._server_map = {}
  48         self._image = None
  49         self._flavor = None
  50         self._user = None
  51         self.template_file = None
  52         self.heat_parameters = None
  53         # generate an uuid to identify yardstick_key
  54         # the first 8 digits of the uuid will be used
  55         self.key_uuid = uuid.uuid4()
  56         self.key_filename = ''.join(
  57             [YARDSTICK_ROOT_PATH, 'yardstick/resources/files/yardstick_key-',
  58              get_short_key_uuid(self.key_uuid)])
  59         super(HeatContext, self).__init__()
  60
  61     def assign_external_network(self, networks):
  62         sorted_networks = sorted(networks.items())
  63         external_network = os.environ.get("EXTERNAL_NETWORK", "net04_ext")
  64         have_external_network = [(name, net)
  65                                  for name, net in sorted_networks if
  66                                  net.get("external_network")]
  67         # no external net defined, assign it to first network usig os.environ
  68         if sorted_networks and not have_external_network:
  69             sorted_networks[0][1]["external_network"] = external_network
  70
  71     def init(self, attrs):     # pragma: no cover
  72         """initializes itself from the supplied arguments"""
  73         self.name = attrs["name"]
  74
  75         self._user = attrs.get("user")
  76
  77         self.template_file = attrs.get("heat_template")
  78         if self.template_file:
  79             self.heat_parameters = attrs.get("heat_parameters")
  80             return
  81
  82         self.keypair_name = self.name + "-key"
  83         self.secgroup_name = self.name + "-secgroup"
  84
  85         self._image = attrs.get("image")
  86
  87         self._flavor = attrs.get("flavor")
  88
  89         self.placement_groups = [PlacementGroup(name, self, pgattrs["policy"])
  90                                  for name, pgattrs in attrs.get(
  91                                  "placement_groups", {}).items()]
  92
  93         self.server_groups = [ServerGroup(name, self, sgattrs["policy"])
  94                               for name, sgattrs in attrs.get(
  95                               "server_groups", {}).items()]
  96
  97         self.assign_external_network(attrs["networks"])
  98
  99         self.networks = [Network(name, self, netattrs) for name, netattrs in
 100                          sorted(attrs["networks"].items())]
 101
 102         for name, serverattrs in attrs["servers"].items():
 103             server = Server(name, self, serverattrs)
 104             self.servers.append(server)
 105             self._server_map[server.dn] = server
 106
 107         rsa_key = paramiko.RSAKey.generate(bits=2048, progress_func=None)
 108         rsa_key.write_private_key_file(self.key_filename)
 109         print("Writing %s ..." % self.key_filename)
 110         with open(self.key_filename + ".pub", "w") as pubkey_file:
 111             pubkey_file.write(
 112                 "%s %s\n" % (rsa_key.get_name(), rsa_key.get_base64()))
 113         del rsa_key
 114
 115     @property
 116     def image(self):
 117         """returns application's default image name"""
 118         return self._image
 119
 120     @property
 121     def flavor(self):
 122         """returns application's default flavor name"""
 123         return self._flavor
 124
 125     @property
 126     def user(self):
 127         """return login user name corresponding to image"""
 128         return self._user
 129
 130     def _add_resources_to_template(self, template):
 131         """add to the template the resources represented by this context"""
 132         template.add_keypair(self.keypair_name, self.key_uuid)
 133         template.add_security_group(self.secgroup_name)
 134
 135         for network in self.networks:
 136             template.add_network(network.stack_name)
 137             template.add_subnet(network.subnet_stack_name, network.stack_name,
 138                                 network.subnet_cidr)
 139
 140             if network.router:
 141                 template.add_router(network.router.stack_name,
 142                                     network.router.external_gateway_info,
 143                                     network.subnet_stack_name)
 144                 template.add_router_interface(network.router.stack_if_name,
 145                                               network.router.stack_name,
 146                                               network.subnet_stack_name)
 147
 148         # create a list of servers sorted by increasing no of placement groups
 149         list_of_servers = sorted(self.servers,
 150                                  key=lambda s: len(s.placement_groups))
 151
 152         #
 153         # add servers with scheduler hints derived from placement groups
 154         #
 155
 156         # create list of servers with availability policy
 157         availability_servers = []
 158         for server in list_of_servers:
 159             for pg in server.placement_groups:
 160                 if pg.policy == "availability":
 161                     availability_servers.append(server)
 162                     break
 163
 164         # add servers with availability policy
 165         added_servers = []
 166         for server in availability_servers:
 167             scheduler_hints = {}
 168             for pg in server.placement_groups:
 169                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 170             # workround for openstack nova bug, check JIRA: YARDSTICK-200
 171             # for details
 172             if len(availability_servers) == 2:
 173                 if not scheduler_hints["different_host"]:
 174                     scheduler_hints.pop("different_host", None)
 175                     server.add_to_template(template,
 176                                            self.networks,
 177                                            scheduler_hints)
 178                 else:
 179                     scheduler_hints["different_host"] = \
 180                         scheduler_hints["different_host"][0]
 181                     server.add_to_template(template,
 182                                            self.networks,
 183                                            scheduler_hints)
 184             else:
 185                 server.add_to_template(template,
 186                                        self.networks,
 187                                        scheduler_hints)
 188             added_servers.append(server.stack_name)
 189
 190         # create list of servers with affinity policy
 191         affinity_servers = []
 192         for server in list_of_servers:
 193             for pg in server.placement_groups:
 194                 if pg.policy == "affinity":
 195                     affinity_servers.append(server)
 196                     break
 197
 198         # add servers with affinity policy
 199         for server in affinity_servers:
 200             if server.stack_name in added_servers:
 201                 continue
 202             scheduler_hints = {}
 203             for pg in server.placement_groups:
 204                 update_scheduler_hints(scheduler_hints, added_servers, pg)
 205             server.add_to_template(template, self.networks, scheduler_hints)
 206             added_servers.append(server.stack_name)
 207
 208         # add server group
 209         for sg in self.server_groups:
 210             template.add_server_group(sg.name, sg.policy)
 211
 212         # add remaining servers with no placement group configured
 213         for server in list_of_servers:
 214             # TODO placement_group and server_group should combine
 215             if not server.placement_groups:
 216                 scheduler_hints = {}
 217                 # affinity/anti-aff server group
 218                 sg = server.server_group
 219                 if sg:
 220                     scheduler_hints["group"] = {'get_resource': sg.name}
 221                 server.add_to_template(template,
 222                                        self.networks, scheduler_hints)
 223
 224     def deploy(self):
 225         """deploys template into a stack using cloud"""
 226         print("Deploying context '%s'" % self.name)
 227
 228         heat_template = HeatTemplate(self.name, self.template_file,
 229                                      self.heat_parameters)
 230
 231         if self.template_file is None:
 232             self._add_resources_to_template(heat_template)
 233
 234         try:
 235             self.stack = heat_template.create()
 236         except KeyboardInterrupt:
 237             sys.exit("\nStack create interrupted")
 238         except RuntimeError as err:
 239             sys.exit("error: failed to deploy stack: '%s'" % err.args)
 240         except Exception as err:
 241             sys.exit("error: failed to deploy stack: '%s'" % err)
 242
 243         # copy some vital stack output into server objects
 244         for server in self.servers:
 245             if server.ports:
 246                 # TODO(hafe) can only handle one internal network for now
 247                 port = next(iter(server.ports.values()))
 248                 server.private_ip = self.stack.outputs[port["stack_name"]]
 249
 250             if server.floating_ip:
 251                 server.public_ip = \
 252                     self.stack.outputs[server.floating_ip["stack_name"]]
 253
 254         print("Context '%s' deployed" % self.name)
 255
 256     def undeploy(self):
 257         """undeploys stack from cloud"""
 258         if self.stack:
 259             print("Undeploying context '%s'" % self.name)
 260             self.stack.delete()
 261             self.stack = None
 262             print("Context '%s' undeployed" % self.name)
 263
 264         if os.path.exists(self.key_filename):
 265             try:
 266                 os.remove(self.key_filename)
 267                 os.remove(self.key_filename + ".pub")
 268             except OSError:
 269                 LOG.exception("Key filename %s", self.key_filename)
 270
 271         super(HeatContext, self).undeploy()
 272
 273     def _get_server(self, attr_name):
 274         """lookup server info by name from context
 275         attr_name: either a name for a server created by yardstick or a dict
 276         with attribute name mapping when using external heat templates
 277         """
 278         key_filename = pkg_resources.resource_filename(
 279             'yardstick.resources',
 280             'files/yardstick_key-' + get_short_key_uuid(self.key_uuid))
 281
 282         if isinstance(attr_name, collections.Mapping):
 283             cname = attr_name["name"].split(".")[1]
 284             if cname != self.name:
 285                 return None
 286
 287             public_ip = None
 288             private_ip = None
 289             if "public_ip_attr" in attr_name:
 290                 public_ip = self.stack.outputs[attr_name["public_ip_attr"]]
 291             if "private_ip_attr" in attr_name:
 292                 private_ip = self.stack.outputs[
 293                     attr_name["private_ip_attr"]]
 294
 295             # Create a dummy server instance for holding the *_ip attributes
 296             server = Server(attr_name["name"].split(".")[0], self, {})
 297             server.public_ip = public_ip
 298             server.private_ip = private_ip
 299         else:
 300             if attr_name not in self._server_map:
 301                 return None
 302             server = self._server_map[attr_name]
 303
 304         if server is None:
 305             return None
 306
 307         result = {
 308             "user": server.context.user,
 309             "key_filename": key_filename,
 310             "private_ip": server.private_ip
 311         }
 312         # Target server may only have private_ip
 313         if server.public_ip:
 314             result["ip"] = server.public_ip
 315
 316         return result